Icm Controls icm2820 Furnace Control Board 18/30 Vac

Product Description

The ICM CONTROLS icm2820 is a furnace control board designed to manage the core operating functions of a gas furnace. It sequences and controls the induced draft blower, circulator blower, gas valve, ignitor, and flame sensor based on signals received from the thermostat and onboard sensors. The icm2820 also includes integrated fault detection, communicating faults in real time via an onboard LED diagnostic display. When conditions require it, the board initiates a timed safety lockout to protect the system from unsafe operating states. Licensed HVAC technicians install this board during service calls or furnace refurbishment.

This control board is suited for residential gas furnace applications where a direct replacement control is needed to restore full system sequencing and safety monitoring. It handles low-voltage thermostat input processing alongside line-voltage output switching for blower and valve control, making it a functional all-in-one solution for standard forced-air furnace systems. Installers working on system-down service calls will find it addresses both sequencing failures and fault-communication needs in a single board replacement.

Key Features

• Controls induced draft blower, circulator blower, gas valve, ignitor, and flame sensor sequencing
• Accepts inputs from thermostat and multiple furnace safety sensors
• Onboard LED display communicates active and stored fault codes
• Timed safety lockout engages automatically when unsafe conditions are detected
• Operates at 18/30 VAC for compatibility with standard low-voltage furnace control circuits

Compatibility

Designed as an OEM-style replacement control board for residential gas furnace applications requiring standard sequencing and fault-detection functionality.

Installation Notes

Installation of a furnace control board should be performed by a licensed HVAC technician. Disconnect power to the furnace at the disconnect switch or breaker and shut off the gas supply before beginning any board removal or installation. Document existing wiring connections before disconnecting them to ensure accurate reinstallation. Work must comply with local mechanical and electrical codes, including applicable IFGC and NEC requirements.

Technical Specifications

• Voltage: 18/30 VAC
• Product Type: Furnace Control Board

Standard Information

• Brand: ICM CONTROLS
• Manufacturer Part Number: icm2820